The second one, and the two last should be the right answer,
Hope this helped:)
= 11( - 1)
Step-by-step explanation:
The sum to n terms of a geometric sequence is
=
where a₁ is the first term and r the common ratio
Here a₁ = 11 and r = = = 2 , then
= = 11 ( - 1)
Answer: d3< d10>
Step-by-step explanation:
